$zipfile = array();
$fp = fopen("5_2.txt", "r");
while(!feof($fp)) {
     $zipfile[] = fgets($fp, 4096);
}
fclose($fp);

$k = 1;
for($i=0;$i<count($zipfile);$i++){

     $inboard = explode(',',$zipfile[$i]);

$k++;
}